Question

Cati atomi de hidrogen se gasesc in 10g de hidrogen? Cate molecule cuprinde aceste grame? Cati atomi de clor reactioneaza cu aceeasi cantitate de hidrogen?

Answer 1

M,H=1g/mol
calculez nr.noli:  niu= 10g/1g/mol=10moliH
calculez nr.atomi; N= 10molx6,023x10²³atomi/mol=..........

M,H2= 2g/mol
niu= 10g/2g/mol= 5moli H2
N= 5molx6,023x10²³molecule/mol
1mol     1mol
H2    +   Cl2=    2HCL--> N,Cl= N,H